4Life Research

4Life Research is an American multi-level marketing company specializing in immune system support products, particularly its flagship Transfer Factor technology. Founded in 1998 by David and Bianca Lisonbee in Sandy, Utah, 4Life has built its brand identity around Transfer Factor, a proprietary extract derived from colostrum and egg yolks that the company claims supports the immune system. The scientific concept of transfer factors—molecules that transfer immune 'memory' between organisms—has legitimate scientific backing, though the specific health claims made for 4Life products have faced regulatory scrutiny in some markets. 4Life operates in over 60 countries with approximately 300,000 active distributors. The company employs approximately 750 people and generates estimated annual revenue of $500 million to $600 million. Beyond its Transfer Factor line, 4Life offers a comprehensive range of nutritional supplements, weight management products, personal care items, and a skincare line. 4Life's Targeted Transfer Factor products are marketed for specific health needs including energy, mental clarity, immune strength, and cardiovascular health. The company has invested in scientific research and has published studies in peer-reviewed journals supporting aspects of its Transfer Factor technology. 4Life's compensation plan is based on a binary hybrid structure, combining a binary tree with unilevel overrides, allowing distributors to earn both from their personal recruiting efforts and from their organization's total volume. The company has received numerous industry awards and is a member of the Direct Selling Association (DSA).